/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2024 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "tim.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */

/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/

/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/* USER CODE BEGIN PV */
/* Captured Values */
uint32_t uwIC2Value1_T2CH1 = 0;
uint32_t uwIC2Value2_T2CH1 = 0;
uint32_t Diff_high = 0;
uint32_t Diff_low = 0;
uint16_t uhCaptureIndex_T2CH1 = 0;
uint32_t uwFrequency_T2CH1 = 0;
uint8_t duty_T3CH2 = 0;

void HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef *htim)
{
	if(htim == &htim2)
	{
		  if (htim->Channel == HAL_TIM_ACTIVE_CHANNEL_1)
		  {
			if(uhCaptureIndex_T2CH1 == 0)
			{
				  /* Get the 1st Input Capture value */
				  uwIC2Value1_T2CH1 = HAL_TIM_ReadCapturedValue(htim, TIM_CHANNEL_1);
				__HAL_TIM_SET_CAPTUREPOLARITY(htim, TIM_CHANNEL_1,TIM_INPUTCHANNELPOLARITY_FALLING);
				  uhCaptureIndex_T2CH1 = 1;
			}
			else if(uhCaptureIndex_T2CH1 == 1)
			{
				  /* Get the 2nd Input Capture value */
				  uwIC2Value2_T2CH1 = HAL_TIM_ReadCapturedValue(htim, TIM_CHANNEL_1); 
					__HAL_TIM_SET_CAPTUREPOLARITY(htim, TIM_CHANNEL_1,TIM_INPUTCHANNELPOLARITY_RISING);
				  /* Capture computation */
				  if (uwIC2Value2_T2CH1 > uwIC2Value1_T2CH1)
				  {
					Diff_high = (uwIC2Value2_T2CH1 - uwIC2Value1_T2CH1); 
				  }
				  else if (uwIC2Value2_T2CH1 < uwIC2Value1_T2CH1)
				  {
					/* 0xFFFF is max TIM1_CCRx value */
					Diff_high = ((0xffffffff - uwIC2Value1_T2CH1) + uwIC2Value2_T2CH1) + 1;
				  }
				  else
				  {
					/* If capture values are equal, we have reached the limit of frequency
					   measures */
					Error_Handler();
				  }
				  uwIC2Value1_T2CH1 = uwIC2Value2_T2CH1;
				  uhCaptureIndex_T2CH1 = 2;
			}
			else	if(uhCaptureIndex_T2CH1 == 2)
			{
				  /* Get the 2nd Input Capture value */
				  uwIC2Value2_T2CH1 = HAL_TIM_ReadCapturedValue(htim, TIM_CHANNEL_1); 

				  /* Capture computation */
				  if (uwIC2Value2_T2CH1 > uwIC2Value1_T2CH1)
				  {
					Diff_low = (uwIC2Value2_T2CH1 - uwIC2Value1_T2CH1); 
				  }
				  else if (uwIC2Value2_T2CH1 < uwIC2Value1_T2CH1)
				  {
					/* 0xFFFF is max TIM1_CCRx value */
					Diff_low = ((0xffffffff - uwIC2Value1_T2CH1) + uwIC2Value2_T2CH1) + 1;
				  }
				  else
				  {
					/* If capture values are equal, we have reached the limit of frequency
					   measures */
					Error_Handler();
				  }

				  /* Frequency computation: for this example TIMx (TIM1) is clocked by
					 APB2Clk */      
				  uwFrequency_T2CH1 = 1e6 / (Diff_high + Diff_low);
				  duty_T3CH2 = Diff_high * 100.0f / (Diff_high + Diff_low);
				  uhCaptureIndex_T2CH1 = 0;
			}
			HAL_TIM_IC_Start_IT(&htim2,TIM_CHANNEL_1);
		  }
  }
	
}
/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_TIM2_Init();
  MX_TIM3_Init();
  /* USER CODE BEGIN 2 */
	HAL_TIM_IC_Start_IT(&htim2,TIM_CHANNEL_1);
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Configure the main internal regulator output voltage
  */
  HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1);
  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
  RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV1;
  RCC_OscInitStruct.PLL.PLLN = 10;
  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
  RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
  RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }
  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
  {
    Error_Handler();
  }
}

/* USER CODE BEGIN 4 */

/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();
  while (1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}

#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
